postgresql/contrib/dblink/dblink--1.0--1.1.sql
Tom Lane 8255566f9d Create an improved FDW option validator function for contrib/dblink.
dblink now has its own validator function dblink_fdw_validator(), which is
better than the core function postgresql_fdw_validator() because it gets
the list of legal options from libpq instead of having a hard-wired list.

Make the dblink extension module provide a standard foreign data wrapper
dblink_fdw that encapsulates use of this validator, and recommend use of
that wrapper instead of making up wrappers on the fly.

Unfortunately, because ad-hoc wrappers *were* recommended practice
previously, it's not clear when we can get rid of postgresql_fdw_validator
without causing upgrade problems.  But this is a step in the right
direction.

Shigeru Hanada, reviewed by KaiGai Kohei
2012-10-10 16:53:08 -04:00

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SQL

/* contrib/dblink/dblink--1.0--1.1.sql */
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "ALTER EXTENSION dblink UPDATE TO '1.1'" to load this file. \quit
CREATE FUNCTION dblink_fdw_validator(
options text[],
catalog oid
)
RETURNS void
AS 'MODULE_PATHNAME', 'dblink_fdw_validator'
LANGUAGE C STRICT;
CREATE FOREIGN DATA WRAPPER dblink_fdw VALIDATOR dblink_fdw_validator;